4+ West Waste Dragons (like Hechaeva) and 6+ West Waste Dragons (like Ionat) are pullable without lull, FD, etc. It just takes watching for pathers and dodging them. For Ionat you do need Sont to be killed or moved away from the entrance for a lull-less pull.
https://youtu.be/igpbLuNe0ls?feature=shared - Bravatar solo pull and kill on a Shaman, self buff only.
https://youtu.be/oPxeOVuX0G8?feature=shared - Ionat solo pull and kill on a shaman, self buff only.
I am not 100% sure if Ice Burrower is a worthy target. They do not summon, and their AoE is a proc triggered in combat, so they won't randomly dispel you like a 4+ Dragon unless you are in range to get attacked. They don't have extra HP regen either. As fas as I know any class with a ranged attack can eventually kite them to death. In the video below I show how you can just run back and forth along the shore to avoid adds.
https://youtu.be/5fsvt1xfuqY?feature=shared - Ice burrower solo kill Shaman, self buff only.
Now that mobs can no longer be interrupted via push, I do not think it is actually possible to solo/duo a 6+ Dragon that can CH. You will need to fight them on their spawn point to avoid gate, and they will CH multiple times. The long kill time though multiple CH's and the high probability of adds is a tall order. Not sure if a solo enchanter or a duoing enchanter would be able to sieve it well enough by themselves while doing their other duties. I have tried to do the 6+ CH dragons both solo and duo a few times. It didn't work well either on the spawn point or pulled to the shore.